Speed-changing mechanism.



F. C. BRUNHOUSE.

SPEED CHANGING MBGHANISM.l APPLICATION FILED JAN.13, 1909.

936,300, Patented oct.12,1909.

y mv

' plish by the .auxiliary shaft tiren "n r plurality ci gears niouuted to run Speeicatcn of Letters Patent.

latented Get. 12, 1909,

anuery 13, 1969, Serial No. fit/2,034.

To all whom iz' may concern:

Be it known that C. BRULn nonsn, a citizen the United States, rcsiding in llhilaoelihia, in the count-y ci idiiladelpliie Siete of Pennsylvania., have invented certain new ana useful lin prevcnients in Speed-Changing Mechanisms,

which-the following is ay specification.

My invention relates to speed changing tuisrns, designed for vehicles, lwhere variable epee: required.

My objet; -s to a device of this character Whe tf'e lianism for t' e erward speeds .nl .iatrer the reverse e indcpen (lent an ndividual and are combined and arranged in new and novel manner, li/iy aim is to simplify this combination so as to obtain compactness, durability, effectiveness and. of operation. This accom means herein described and shown on the accompanying drawing.

igure 1 is horizontal section of the enmechanism inciosed in its casing. Fig. is ele' o-"i the ineclianisn'i shown in Fig. 1.

ln Fig. Si., 1, is. e Where variabl rear axle .l nected by a usual manner.

c said req ni red,

.i cranism in the Le power shaft, 3 is an l which the power :troni power shaft 2, by means of u free on the 'iliary shaft, to the drivtlie ential case, which transnii tte power shaft and au ing gear 5, i

is rotatably nieu' l in the bear-i1 rf-land l5, in the casi l i. on the diiiereniial Liare rotatw y mounten irc-e the riv-i ing and t, u'hicli are held in pince collars 9 une 1U ceu ed to ilic diii'crential The. sgiiin` in clutches i' and 8 are rotatably ino u ce cn the differential case to be slid to una o eliereon by a lever, {lever not shown)-atlanted to eugene either of said driving gears and li as required. The pinion 12 is rotatably mounted free on the end of power shaft 2, ain. is ecnstantly in mesh with driving' gear .(5, and brought 11., slidably mountinto oneration bv clutch Y ,L Y

ed on the endet pouver shaft The pinion securely' nio-uut 'ed en fic end oiaurilsnait 3 and remains com: wily in mesli willi the driving gear 5, ars 17, 18 l), 2Q, 21, und are mount-ed free on f 'lic power shaft 2 and auxiliary shaft and l gi. c engagement as required by 'auxiliary shaft 3 and auxiliary the double faced spring-pin clutches 2G, 27, 28 andj29 which are slidably mo/unted on the power shaft 2 and auxiliary shaft 3. Throughout this mechanism any other stylo of clutch or clutch elements can be substituted` for the spring-pin clutches. is a small pinion mounted on pin 30 securely mounted in a boss in the casing 1G, to transinit the power from gear 17 to gear 18. The bea-rings 31, 32, 33, 34, and 3G in casing 1G, support shaft 2 and auxiliary shaft in my improved speed changing mechanism as shown in Fig. 1, the power shaft- 2 and auxiliary shaft 3 are not broken, all the gears mounted thereon are constantly in mesh `with the one opposite it, and so arranged in pairs on the said power shaft and said 'auxiliary shaft, Wit-h double faced clutch elements slidably mounted on said power shaft and said auxiliary shaft between each tufo pairs of said gears, that only the pair of gears required to produce the speed desired can -be used at any one time, all the remaining pairs of gears to produce the' other variable speeds being at rest. The entire mechanism is operated by one lever of the selective type, each speed being independent and individual, thus eliminating the extraordinary Wearing and positively' preventsstripping of gears.

Having thus described the component parts ot my speed changing 'mechanisnn I will non' describe the manner in which ille various speeds are obtained. In the dra-wing the parts required to produce the variable are disengarcd.

To obtain the nrst speed for iard, the Y clutch i' is brought. into engagement with driving gear 5 and the clutches` 2G and 2T are brought into engagement With the gears 19 and 20, the power shaft 2 being in revolution, the power is then transmitted through gear 19 on power shaft 2 to gear 2() on turn transmits the power' through pinion 12% to driving gear 5, so that the rotation or' the driving gear 5 rotates the axle 1, 1 of the vehicle and produces the first or low speed forward. FWhile the part-s above de'- scribed are thus engaged, the other parts are :1t-rest 'lo obtain the first speed forward, the clutch 'i' remainsin engagement with driving gear 5, but clutches 26 and 27 are disenfrom gears 19 and 20, and clutches 28 and 2.9 areLbrought into engagement with shaft 3 inand two-part axle, a. 1ear .clutch 7 and collar l() as described.

m season gears 2l and thehp'ovver isthen transmitted as before described to driving gear 5, which in like manner produces the second speed forward, meanwhile all the' other parte are at rest.

The third speed forward permitting, clutch 7 n with driving; gear 5 and disengagmg clutches 28 and 29 'from gears 21 and Q2 andbringingI the said clutches into engagement with gears 23 and 24, the power is then'transmitted as before described to driving gear 5, which in like manner producesthe third speed forward, all the other parts being at rest.

The fourth speed forward is obtained by disenggaing` clutch 7 from driving gear 5, and disengaging clutches 28 and 29 .troni gears 28 and 9A, and bringing clutch 8 into engagement vwith driving gear 6 and clutch ll into engagement with pinion l2 on power shaft 2, the power shaft, 2 being in revohr is obtained hy tion, the power is transmitted through pingear (3, so that the rotation ion 12 to driving I the axle l, l ol,

of driving gear 6 rotates the vehicle and produces the fourth or high speed forward, all the other parts et the mechanism beingat rest. The fourth speedy forward just described can be eliminated from the said speed changing 'niechanisnn by discardingl the driving `ear G, the clutch 8 and the collar t) mounted on the differential case and the clutch ll and pinion l2 mounted on the power shatt and still obtain the three speeds lorward and the reverse as previously described by securely mounting the driving gear 5 on the diterential case, instead of bringing it into engagement by AH?? additional number of speeds forward can he obtained by the principle employed herein. lt new remains to describe the reverse, disengage clutch S from dri ring); gear (hand clutch ll vfrom pinion '12, and bring,` into en rangement clutch T with driving' lear 5, and clutch 2G and 2T into engagement with gears 17 and 1S, the power is then transmitted through gear 1T on shaft by pinion 25 on pin 3l) mounted in boss in casingr 16, to gear 13 on auxiliary shaft 3, auxiliary shaft 3 in turn transmits the power through pinion i3 to driving gear 5, which in turn transmits the power to axle l, l of the vehicle and produces the reverse. While the parts described are thus engaged, the other parts are at rest.

What I claim as my invention and desire to secure by Letters Patent is l. in a. speed changing' mechanism, a twopartaxle, ditiferential mechanism operatively coiinectiine` the same, a differential case inclosinu' said dili'erential mechanism easing in which said differential ease is rotatably mounted, clutch elements 'furnished with springfpressed clutch pins mounted 'tree upon said to remain in engagement differential case, gears mounted free upon said dii'erential case and furnished withv clutch. seats adapted 'to receive said clutch pins, collars securely inoimted ential case and arranged between said clutch elements and said tree gears and having clutch seats adapted to receive the clutch pins, a power shaft, a pinion mounted'ree ion said `Jpower shaft and constantly engaging one of the tree gears on said difieren- `tial ca se, a clutch element slidably mounted on said power shaft adapted to engage said on said dilit'er-l pinion, double faced clutch elements slidably mounted on the power shaft and furnished with spring-pressed clutch pins, gears mounted free on said power shaft and provided with seats adapted to receive said clutch pins, an auxiliary shaft, apinion securely mounted on said auxiliary shaft and constantly engaging the other o the free gears on s: id differential cas-e, double faced clutch elements slidably 'mounted on the auxiliary shaft and :furnished with springpresseifl clutch pins, gears mounted free on said auxiliary shaft and furnished with seats adapted to receive said clutch pins, the said gears oi variable diameters to produce the 'variable specils being1 arranged on the power shaft and on the auxiliary shaft in pairs opposite each other and constantly in mesh, a gear mounted 'l'ree on the power shaft and furnished with clutch seats adapted to be engaged by one. olE said clutch elements on the power sha'l't, a gear mounted free on the auxiliary shaft opposite the gear on the power shatft and 'furnished with clutch seats adapted to he engaged by one of said clutch elements on the auxiliary securely mounted in aboss or" the gear cas- -ing, a pinioninounted on said shaft pin and constantly'v in mesh with said. gear on the power shaft and Awith said gea'j on'the auxiliary shaft, substantially asidescribed.

ln a' speed changing/mechanism, the combination with a two-part axle, of a difshaft, a shaft pin terential mechanism operatively connecting the saine, a dilierential case inclosing said diti'erential mechanism and two part axle, a fear easing in which said dilieretial case is rotatably mounted, clutch elements mount'- ed 'free on said differential -case having spring-pressed clutch pins, gears mounted free on. said differential ease with clutch` seats adapted to receive said clutch pins,

collars securely mounted on said differential rase and arranged Ibetuie'en said clutch elements and said free gears and having clutch seats adapted to receive the clutch pins, a power shaft and an auxiliary shaft, pinions on power shaft. and on said auxiliary shaft. and constantly in` mesh with the free gears on the differential case, a clutch element slidahly mounted on the power shaft adapted to engage the* :pinion on the power shatt, e plurality of gears mounted free on n gear mounted free on the auxiliary shaft opposite the gear on the power shaft clutch seats ada ted to been tain of the said e having uteh elements on the power gaged by cerfh shaft and on the auxiliary shaft, a, shaftlpin securely mounted inta boeg, ofthef'geareas- '1.5 lng, a pinion mounted on sald shaft pin and constantly in. mesh with the gear on the power. shaft Aand the gear on the auxiliary sha-ft, substantially as described. l

In testimony whereof I herewith aiix my 20 signaturei in the presence of two Witnesse FEEDERISKG. BRUN HOUSE. Witnesses RALPH E. BRUNHOUSE. o ALLEN M. STEARNE. 

